WS/T 168-1999
Workplace air.Determination of diphenyl methane 4,4'-di-iso-cyanate-N-(1-naphthyl) ethylenediamine dihydrochloride spectrophotometric method (English Version)

Standard No.

WS/T 168-1999

Language

Chinese, Available in English version

Release Date

1999

Published By

Professional Standard - Hygiene

Status

Withdraw

Latest

WS/T 168-1999

Scope

This standard specifies the naphthylethylenediamine hydrochloride spectrophotometric method for the determination of diphenylmethane diisocyanate in the air in workplaces. This standard is applicable to the determination of diphenylmethane diisocyanate concentration in the air in workplaces.

WS/T 168-1999 history

• 1999 WS/T 168-1999 Workplace air.Determination of diphenyl methane 4,4'-di-iso-cyanate-N-(1-naphthyl) ethylenediamine dihydrochloride spectrophotometric method